Energy storage systems are one of the key technologies for the energy turnaround. With their help, the fluctuating supply of electricity based on photovoltaics and wind power can be stored until the time of consumption.
The new energy module of KIT generates, stores, and distributes electricity. In addition, it balances fluctuating renewable energies. (Montage: PCE/KIT)
Apart from the battery, the key component of the stationary energy storage system is an adapted power electronics unit for charging and discharging the battery within two hours only. Hence, the stationary storage system can be applied as an interim storage system for peak load balancing. During times of weak loads, solar energy and wind electricity are fed into the battery. At times of peak load, the energy from the photovoltaics system, wind generator, and battery is fed into the grid. Apart from load management, night discharge is of significant economic importance, because consumption of photovoltaics energy by other electric devices of the user can be increased considerably. The battery is charged in the afternoon and discharged during darkness until the next morning.
“Controlling the interaction of solar cells, wind generator, storage systems, and the grid is the central challenge,” Gutsch explains. System control always has to reliably and precisely interfere with the multitude of operation states. Only this will ensure a good service life and performance of the lithium-ion batteries in the long term and, hence, economic efficiency of the complete system. “Such a system can be controlled 24 h a day and 365 days a year with detailed battery know-how. Only then will economically efficient and safe operation be guaranteed for decades,” emphasizes Gutsch. After first functional tests, concrete application systems of variable power will be produced in cooperation with industry.In spite of the high costs of lithium-ion batteries, this technology may be worthwhile today already, in particular in regions that do not have any stable grids. Smaller and larger islands, for example, are often supplied with electricity by diesel generators. In Africa and India, large areas are not supplied with electricity at all. A photovoltaics system with a coupled lithium-ion battery can be applied profitably, if appropriate system design and load profile are chosen. With decreasing costs of system components, we will achieve “battery parity” in Germany, in analogy to the “grid parity” already reached for photovoltaics-based electricity consumption by the private customer.
For further information, please contact:
Monika Landgraf | EurekAlert!
New method increases energy density in lithium batteries
24.10.2016 | Columbia University School of Engineering and Applied Science
'Super yeast' has the power to improve economics of biofuels
18.10.2016 | University of Wisconsin-Madison
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
By forcefully embedding two silicon atoms in a diamond matrix, Sandia researchers have demonstrated for the first time on a single chip all the components needed to create a quantum bridge to link quantum computers together.
"People have already built small quantum computers," says Sandia researcher Ryan Camacho. "Maybe the first useful one won't be a single giant quantum computer...
COMPAMED has become the leading international marketplace for suppliers of medical manufacturing. The trade fair, which takes place every November and is co-located to MEDICA in Dusseldorf, has been steadily growing over the past years and shows that medical technology remains a rapidly growing market.
In 2016, the joint pavilion by the IVAM Microtechnology Network, the Product Market “High-tech for Medical Devices”, will be located in Hall 8a again and will...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
24.10.2016 | Earth Sciences
24.10.2016 | Life Sciences
24.10.2016 | Physics and Astronomy